L.TileLayer.ChinaProvider = L.TileLayer.extend({

  initialize: function(type, options) { // (type, Object)
    var providers = L.TileLayer.ChinaProvider.providers;

    var parts = type.split('.');

    var providerName = parts[0];
    var mapName = parts[1];
    var mapType = parts[2];

    var url = providers[providerName][mapName][mapType];
    options.subdomains = providers[providerName].Subdomains;
    options.key = options.key || providers[providerName].key;
    L.TileLayer.prototype.initialize.call(this, url, options);
  }
});

L.TileLayer.ChinaProvider.providers = {
  TianDiTu: {
    Normal: {
      Map: "http://t{s}.tianditu.com/DataServer?T=vec_w&X={x}&Y={y}&L={z}&tk={key}",
      Annotion: "http://t{s}.tianditu.com/DataServer?T=cva_w&X={x}&Y={y}&L={z}&tk={key}"
    },
    Satellite: {
      Map: "http://t{s}.tianditu.com/DataServer?T=img_w&X={x}&Y={y}&L={z}&tk={key}",
      Annotion: "http://t{s}.tianditu.com/DataServer?T=cia_w&X={x}&Y={y}&L={z}&tk={key}"
    },
    Terrain: {
      Map: "http://t{s}.tianditu.com/DataServer?T=ter_w&X={x}&Y={y}&L={z}&tk={key}",
      Annotion: "http://t{s}.tianditu.com/DataServer?T=cta_w&X={x}&Y={y}&L={z}&tk={key}"
    },
    Subdomains: ['0', '1', '2', '3', '4', '5', '6', '7'],
    key: "174705aebfe31b79b3587279e211cb9a"
  },

  GaoDe: {
    Normal: {
      Map: 'http://webrd0{s}.is.autonavi.com/appmaptile?lang=zh_cn&size=1&scale=1&style=8&x={x}&y={y}&z={z}'
    },
    Satellite: {
      Map: 'http://webst0{s}.is.autonavi.com/appmaptile?style=6&x={x}&y={y}&z={z}',
      Annotion: 'http://webst0{s}.is.autonavi.com/appmaptile?style=8&x={x}&y={y}&z={z}'
    },
    Subdomains: ["1", "2", "3", "4"]
  },

  Google: {
    Normal: {
      Map: "http://www.google.cn/maps/vt?lyrs=m@189&gl=cn&x={x}&y={y}&z={z}"
    },
    Satellite: {
      Map: "http://www.google.cn/maps/vt?lyrs=s@189&gl=cn&x={x}&y={y}&z={z}",
      Annotion:"https://ditu.google.cn/maps/vt?pb=!1m5!1m4!1i{z}!2i{x}!3i{y}!4i256!2m3!1e0!2sm!3i413113259!3m12!2szh-CN!3sCN!5e18!12m4!1e68!2m2!1sset!2sRoadmapSatellite!12m3!1e37!2m1!1ssmartmaps!4e0!23i1301875&token=59227"
    },
    Subdomains: []
  },

  Geoq: {
    Normal: {
      Map: "http://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineCommunity/MapServer/tile/{z}/{y}/{x}",
      PurplishBlue: "http://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}",
      Gray: "http://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetGray/MapServer/tile/{z}/{y}/{x}",
      Warm: "http://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetWarm/MapServer/tile/{z}/{y}/{x}",
    },
    Theme: {
      Hydro: "http://thematic.geoq.cn/arcgis/rest/services/ThematicMaps/WorldHydroMap/MapServer/tile/{z}/{y}/{x}"
    },
    Subdomains: []
  },

  OSM: {
    Normal: {
      Map: "http://{s}.tile.osm.org/{z}/{x}/{y}.png",
    },
    Subdomains: ['a', 'b', 'c']
  }

};

L.tileLayer.chinaProvider = function(type, options) {
  return new L.TileLayer.ChinaProvider(type, options);
};